Car-wheel.



PATENTED JAN. 23, 1906.

G. 1). SPRINGER 65F. LISTER.

GAR WHEEL.

APPLICATION FILED JUNE 16,1905.

witnesses: 0 Ir$nrs:

Q 80796 prlnger EzznkLmZer UNITE-n STAES PATENT oEEroE.

' GEORGE n, SPRINGER AND FRANK. msrnn, 0E scorn TENNESSEE, 1

KNOXVILLE,

'CAFl-WHE E L.

moi-arc er.

Specification of Letters Patent.

Patented Jan. 23, 1906,

Application filed June 16, 1965- Serial Il'o. 265,523

To all whom it may concern:

vStates, residing at South Knoxville, State of .Tennessee, have invented certain new and useful Improvements in Car-Wheels of which the following is a specification.

The invention to be hereinafter described relates to car-wheels or analogous rotating bodies which turn upon theiraxles or j0urnals; and the object of the present invention is to provide means whereby the friction and consequent wear of the rotating contacting surfaces is reduced to a minimum and the parts are readily assembled or taken apart or renewal or re .lairs.

: In car-whee structures and mounting" where the wheel turns u on a fixed axle it has been proposed to chil or harden the interior. surface of the wheel-hub; but in such destruction of the axle, so that renewal thereof is frequently necessary. In devising means to overcome these and other objections we have found that good results could be secured by providing the contacting relatively rotating parts with chilled or hardened surfaces; but while the interior of the cast-rmetal wheel-hub could be thus treated and herdened it has been found practically difficult I or impossible .to secure a like chilled or hardened surface on the forged axle itself, anyattem t in this direction being liable to detract from the desirable tough character necrior surface ofwhich is chilled, said sleeveheing detachably, but non-rotativel mounted upon the axle and affording a chi led, or har dened bearin for the chilled rotating surface of'the wheel ub itself.

In the drawings, Figure is a front elevation of a car-wheel or like rotatable element having the invention applied thereto, Fig. 2

screw-bolt e.

is a section of the same on'line x ac, Fig, 1 and Fig. 3 is a perspective view of the sleeve or bushing detached. 7

The wheel A may be provided with the usual form of tread-surface and has formed or cast therewith the hub- B, shown as an extended bearing. One end of the hub B'is preferably provided with the inturned portion 7), affording an opening for the assage of the axle C. It will be noted that t e bore of the hub between the inturned portion. 6 and opposite end'is considerably enlarged to afford a seat for the bushing or sleeve D, which accurately fits the same, said bushing or sleeve D being provided with a recess or slot d. to receive a pin (5', which passes through an opening in the end of the axle C, whereby the bushing or sleeve D is detachably, but non rotatably, mounted upon the axle.

In order to hold the wheel A in proper operativeposition on the bushing or sleeve D, a cap E may be provided and secured to lugs c of the wheel A by suitable means, such as the The interior of the hub B of the wheel A is provided with a chilled or har dene'd surface a, extending throughout its contacting extent with the bushing D, and the exterior of the bushing D is likewise provided with a chilled surface 0?, such chilled surfaces being preferably formed dur ng the casting operation. 1

From the construction thus described it will be seen that the bushing or sleeve D is v face, stationary with respect to the axle C,

affords contacting bearin for the interior chilled surface a of the hu B, the result be-= ing that the two chilled or hardened surfaces of the bushing or sleeve and the hub of the wheel are relatively rotatable and in contact with each other. The interior surface of the hub B as well as the exterior surface of the bushing or sleeve D, is preferably cylindrical, so that by removing the ca E from the wheel and moving the wheel slig tly to the right in Fig. 2 after the cap is removed the pin 05 can be detached and the bushing or sleeve D be readily taken from seat within the wheelhub and upon the axle and renewed or,repaired when desired.

While we have shown a particular form of wheel structure and of means for securin the bushing or sleeve in place upon the ax c, it

i drical opening therethrough, the interior suris evident, of course, that variations in these details of structure may be made within the scope of the present invention, which contemplates, as hereinbefore set forth, the

5 chilled.interior surface of the hubrotating upon the chilled exterior surface of the bushing, the latter itself being seated within the wheel-l1ub and held non-rotatably, but detachably, to the axle.

Having thus described our invention, what ent, is V p I 1. In a device of the class described, a wheel having a hub, said hub having its interior bearing-surface chilled or hardened, and

face chilled or hardened and contacting with the, chilled or hardened interior surface of the hub, the hub and bushing or sleevebeing relatively rotatable.

- 2. In a device of the class described, a

wheel having a hub provided with a oylin drical opening therethrough, the interior bearfaceof said hub being chilled or hardened, a bushing fitted within the hub and having its we claim, and desire to secure by Letters Pata bushing-or sleeve having its exterior surerase"? exterior surface chilled or hardened, an axle and meansfor securing the bushing to the axle to provide chilled or hardened rotating having its exterior surface chilled or har dened, arid seated within said hub, an axle and a pin for securing the bushing non-rotatably to the axle to afford chilled rotating bearing-surfaces between the interior surface of the hub and exterior surface of the bushing '5. The combination of a wheelhaving a hub provided with an opening therethrough, the interior surface of said hub being chilled or hardened, an inturned portion at one end of the hub, a bushing having its exterior surface chilled or hardened and seated within the openin in the hub, an axle, means for securing thefi cured to the wheel and extending over the end of the bushing and axle.

In testimony whereo we affix our signatures in presence of two witnesses.

GEORGE n. SPRINGER. FRANK LISTER.

Witnesses:

NORMAN B. MORRELL, CHARLES SEYMOUR.

ushing to the axle, and .a capse- 

